In pools with CYA in them, pH impact on chlorine strength is negligible. I f your pool is serviced weekly and your primary chlorine is trichlor, you may want a higher pH because trichlor will lower it, and CYA will further lower the LSI.
If you're using cal hypo or liquid chlorine, you will want a slightly lower pH, because those chlorines raise the pH. Keep in mind, the pH will rise naturally anyway. The name of the game is optimizing chlorine's strength while also maintaining LSI balance. As mentioned earlier, pools with over 10 ppm CYA can afford a higher pH because the impact on chlorine is so much less.
As far as patron comfort goes, the pH will not always correspond to human eyes, tears, or sweat. And that's okay. The evidence shows that unless pH is way out of whack, eye and skin irritation are not likely. And in my opinion as a competitive swimmer, the more likely culprit for swimmer discomfort is the sanitizer and its disinfection byproducts like chloramines.
Over-treating swimming pools and relying on chlorine to do the lion's share of bather waste removal via oxidation is part of the problem So if you want your water to be comfortable for swimmers, focus on that. Contact Dealer Locator. What is the ideal pH for swimming pools? Go back to main blog. Volver al blog. Related: Chlorine, pH and CYA Relationships Chlorine strength is probably the most common argument we hear when it comes to choosing an ideal pH, but as mentioned earlier, it is not the only one.
A swimmer's opinion I personally do not think pH is the leading cause of eye and skin irritation in swimming pools. Conclusion Is there even such a thing as an "ideal pH"? Share a comment Have feedback? Maybe some questions? Whatever it is, we'd love to hear from you. Related Posts. Carbonate Alkalinity vs. Corrected Alkalinity. Total Alkalinity vs. Have any questions or suggestions? We can help you find the right product for your pool.
No chemical conflicts or long term byproducts. Ways to reach us. Subscribe to the Orenda newsletter Recieve a collection of stories, research, and other info you may find useful. Scan to Download. Low pH water will cause etching and deterioration of plaster, grout, stone, concrete and tiling.
Any vinyl surfaces will also become brittle, which increases risk of cracks and tears. All of these dissolved minerals will hold in the solution of your pool water; which can result in staining and cloudy pool water.
Lastly, but certainly not least, the presence of low pH in your pool will greatly decrease the amount of working chlorine, which can lead to bacteria and algae build up. There are a number of professional products that you can use to raise the pH in your pool. Water alkalinity is one of the main factors that will influence the chemistry of your pool water.
With a proper alkalinity range, we recommend 80 ppm to ppm, total alkalinity keeps the pH level stable. If your alkalinity level is too low, then your pool pH can fluctuate at the slightest addition of an acid or base. Therefore, it is important to routinely perform tests; we recommend once a week.
To raise your alkalinity is to firstly know the size of your pool and what your target alkalinity, within the range, will be be. When your alkalinity level is too low, we recommend Alkajuster , the alkalinity increaser from Club Pro. Alkajuster is a chemical used to increase the level of alkalinity in your swimming pool.
When using this product, broadcast it over the surface of your pool, preferably in the deep end. If your alkalinity level becomes too high, it will become difficult to change the pH. The process of proper re-balancing your pool water alkalinity can take more than one week, so be patient with this one.
If your pool alkalinity becomes too high, we recommend that you either consult a professional for detailed instructions or, use high quality Alkaline adjusting products. Maintaining the proper balance of chemicals in your pool is a continuous process. Any new material that enters your pool such as debris, gardenia, oil, lotion, etc. In addition to pH, it is important to monitor total alkalinity, calcium hardness and total dissolved solids.
When pH remains below 7. This means etching of plaster and metals in equipment such as heat exchangers will result. In addition, it is more difficult to keep chlorine in the pool because while more effective as a sanitizer at the low pH, chlorine is also much less stable resulting in the consumption of larger quantities of chlorine than would be used at normal pH levels. Maintaining the pH higher than 7. Calcium, the major component in scale, is a relatively unstable mineral and when the pH is high, the calcium is not as soluble and it will have a greater tendency to precipitate or "fall out" of solution resulting in cloudiness or scale.
High pH will also reduce chlorine effectiveness resulting in the need to maintain higher chlorine levels to achieve maximum sanitization. If the pH is low, a pH increaser is added to raise the pH. If the pH is high, pH Down is used.
Changes in the pH of pool water can be caused by many factors but one of the most significant cause is the sanitizer used.
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